Herpes simplex is a common skin disease caused by herpes simplex virus infection, with clusters of blisters accompanied by hot itching as the main symptom, which occurs at the junction of the mucous membrane of the skin, other parts of the skin can also occur, common parts of the fingers, cheeks, etc.. The disease is generally difficult to cure, often due to immune deficiency and recurrence, which is often said to be on fire, although recurrent can not be cured but some scholars have suggested that at the first onset, when the virus is not yet hidden in the ganglion, given a certain antiviral treatment can be cured, while once the ganglion is entered, turned into recurrent herpes simplex is very difficult to cure. The commonly used oral medications are acyclovir, famciclovir, topical medications are acyclovir ointment, penciclovir ointment, Chinese medicine jinhuang san, tuo yu san aromatic oil mixed with paste is very effective externally. The herpes simplex virus is divided into two types: herpes simplex virus type I and II. Herpes simplex virus type I mainly causes herpes simplex in the mouth and lips, while type II mainly causes genital herpes.